Sourcing Flowmeters

Hi there,

You would have to provide a bit more data for anyone to give you a bullet proof answer.

Min/Norm/Max:

Flow

Pressure

Viscoscity

Conductivity

Suspended Solids

Pipe ID/OD

Line Material

Flange specification

Area Classification

Vertical/Horizontal installation

Operating Temperature

Velocity

Possibility of vacuum

If you provide this data we can provide you with a more robust answer.

Personally - I prefer Khrone flow meters. I have never had any problems with them - but they are not cheap. www.khrone.com

Regards,

Craig

Yes, as you say, data given is just insufficient.

Many more data will be needed. Besides, original poster shouild datial about the failure. What sort of failure? The reading is wrong or meter stops working completely. If reading is wrong (as he feels), how he knows the REAL flow rate?

If meter stop workng, he needs to check te site conditions, disturbances in power supply, surges in power suppy etc.

Besides, if meter is getting submerged in water, is the meter purchased is of sufficient IP / NEMA rating?

I too personally prefer Krohne meter, as it is much more robust than ABB

This is the sort of problem that needs to be referred to ABB Kent. After all, that company's reputation is at stake and there may be a simple fix that they have discovered from other users.

Priority no.1 is therefore to phone their technical helpline.

I do agree with PWSLACK as flow meter requires 2 basic things,proper installation and wetted parts to fit in with the process ,for long reliability of flow meter.

Agree.

If the ABB flowmeter failed, there is a chance that any other brand will fail as well. What needs to be done is a thorough analysis of the failure to determine what caused it.

If the poster cannot make that analysis then ABB engineers should be consulted. Besides, if the flowmeters are still within warranty, it may be cheaper to have ABB find the problem than to buy a more expensive unit (which may still fail, as I said).

regards,

Vulcan

Hi

Yes would agree with Craig on the data needed to say something. Also the model nos would help of the existing failed flowmeters the serial nos may help the manufacturer.

Moreover please tell what type of failure you have seen, we could analyze that may be problem with installation or system config or may be some other issue.

If you just want some suggestions on any flowmeter models & vendors what type are you looking at.

Regards

Naveen

hi , Naveen

what criag is mention for redesign of the flow meter which is not required at this stage what is important the cause of failure which only the manufacturer knows the best way to solve,that what I stay with PW's opinion

regards

I agree with the previous posts. Like all tech support issues, you should contact the manufacturer and be prepared to answer the following:

- Flowing media information (already covered in a previous post)

- Hook-up (did you follow the manufacturer's recommended instructions; a digital picture always works)

- Electrical (did you follow the wiring diagrams)

- Purchase date

Have the manufacturer make it "right" for you if it is a manufacturing defect, since the equipment should have been provided with a 12 month warranty against manufacturing defects.

There are dozens of reasons why a flow meter stops functioning correctly of which have nothing to do with the workmanship of the meter, and everything to do with incorrect application/installation/integration.

If these meters are on steam, then it has been my experience that the failure is caused by incorrect installation and waterhammer.

Hi all,

The data I mentioned is very necesssary.

1. Mulenmar asked for 'MORE ROBUST FLOWMETERS'

You cannot specify anything unless you have the process data.

2. Is the current meter specified correctly

How would you know this unless you had the process data?

It could be that the wrong meter was incorrectly specified from the beginning. Unless you have the correct process data - you cannot do anything.

Regards,

Craig

Agree !!

As stated earlier, go talk to the manufacturer. Did they give a warranty when selling you the flow meter? Have them come look at the installation, adn see if the meters were improperly installed by contractor, or possibly specified incorrectly. Try the easy solution first. Don't try to recreate the wheel, the manufacturer deals with problems and complaints daily, they have probably seen a situation similar to this before.